JP4514681B2 - 焼結複合体の焼結接合方法 - Google Patents
焼結複合体の焼結接合方法 Download PDFInfo
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- JP4514681B2 JP4514681B2 JP2005271256A JP2005271256A JP4514681B2 JP 4514681 B2 JP4514681 B2 JP 4514681B2 JP 2005271256 A JP2005271256 A JP 2005271256A JP 2005271256 A JP2005271256 A JP 2005271256A JP 4514681 B2 JP4514681 B2 JP 4514681B2
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- 238000005245 sintering Methods 0.000 title claims description 53
- 239000002131 composite material Substances 0.000 title claims description 38
- 238000000034 method Methods 0.000 title claims description 29
- 238000005304 joining Methods 0.000 claims description 44
- 239000000463 material Substances 0.000 claims description 13
- 230000008602 contraction Effects 0.000 claims description 5
- 230000007935 neutral effect Effects 0.000 claims description 4
- 230000008859 change Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 8
- 239000011812 mixed powder Substances 0.000 description 8
- 239000000843 powder Substances 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 6
- 238000000605 extraction Methods 0.000 description 6
- 230000002093 peripheral effect Effects 0.000 description 6
- 239000011148 porous material Substances 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 239000000314 lubricant Substances 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 229910000975 Carbon steel Inorganic materials 0.000 description 2
- 229910000640 Fe alloy Inorganic materials 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000010962 carbon steel Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000000748 compression moulding Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 102200082816 rs34868397 Human genes 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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- Pressure Welding/Diffusion-Bonding (AREA)
- Powder Metallurgy (AREA)
Description
・請求項1の構成では、外部材用圧粉体の端部を内部材の接合予定部よりはみ出させて非接触つまり非拘束状態にすることにより、外部材と内部材の接合予定部とが確実に接合し、内部材軸方向の引き離し(抜去)強度を高くすることができる。また、特許文献1の方法に比べて内部材の加工が極めて簡単で量産性に優れ、品質向上に寄与できる。さらに、はみ出し長さが0.2mm以上に設定されることで接合強度をより確実に向上できる。
・請求項2の構成では、外部材用圧粉体の端部が内部材の接合予定部よりはみ出して非接触となる態様として色々な形状があり、例えば、内外部材の接合面が単純な平面状に限られず、内部材外周に凹溝を有している態様でも適用可能なため汎用性を具備できる。
を説明するための内外部材用原材料の組み合わ例とその焼結複合体構成を示している。
が多い圧粉体、焼結により液相がでる圧粉体を参考にし、目標収縮率に近づけるようにする。内部材は、鋼材などの溶製材、焼結材、圧粉体を問わない。要は、焼結中に外部材との間で相対的に寸法膨張する関係にあればよい。これは、例えば、内部材用圧粉体であれば、外部材用圧粉体の焼結寸法変化の収縮率がより小さいもの、または焼結寸法変化がゼロまたは膨張するものである。
10〜15…内部材
20〜25…外部材
20A…外部材用圧粉体
20a…端部
20b〜25b…はみ出し部
11c〜13c…端縁の面取り
13e〜15e…凹溝(溝部)
11d〜15d…径小部
h…はみ出し長さ
40…隙間
Claims (2)
- 内部材及び外部材を嵌め合わせて焼結により接合する焼結複合体の焼結接合方法において、
前記外部材が圧縮成形された略筒形の圧粉体を焼結したものであり、前記外部材用圧粉体の長さを前記内部材の接合予定部の長さより大きく設定し、
前記内部材の接合予定部より前記外部材用圧粉体の端部が、0.2mm以上はみ出して前記内部材と非接触になるように、前記外部材用圧粉体の筒内に前記内部材を嵌め合わせ、
前記外部材用圧粉体の焼結による寸法収縮により、前記外部材用圧粉体の密度が比較的低いニュートラルゾーンでより収縮して前記内部材に密着するとともに、前記外部材の長さ方向の収縮により、前記外部材の端部が拡張して前記内部材の縁部との間に隙間が形成されるよう変形して接合し、さらに、前記外部材が前記内部材の接合予定部に密着するまで、または、前記外部材の前記端部はみ出し部の孔寸法が前記内部材の接合予定部の太さ寸法と同一になるまで焼結を行うことを特徴とする焼結複合体の焼結接合方法。 - 前記非接触の態様は、前記内部材の端面より前記外部材の端面が突出した状態、または、前記内部材の接合予定部に設けた端縁の面取り部、環状の溝部、接合予定部より細くした小径部のいずれかと前記外部材用圧粉体との間の隙間で形成されることを特徴とする請求項1に記載の焼結複合体の焼結接合方法。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005271256A JP4514681B2 (ja) | 2004-09-21 | 2005-09-20 | 焼結複合体の焼結接合方法 |
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JP2004272728 | 2004-09-21 | ||
JP2005271256A JP4514681B2 (ja) | 2004-09-21 | 2005-09-20 | 焼結複合体の焼結接合方法 |
Publications (2)
Publication Number | Publication Date |
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JP2006118041A JP2006118041A (ja) | 2006-05-11 |
JP4514681B2 true JP4514681B2 (ja) | 2010-07-28 |
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Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05724U (ja) * | 1991-06-25 | 1993-01-08 | 三菱マテリアル株式会社 | 焼成用治具 |
JPH08134510A (ja) * | 1994-11-04 | 1996-05-28 | Teiboo Kk | 金属またはセラミック粉末射出成形による精密部品 |
JP2004300511A (ja) * | 2003-03-31 | 2004-10-28 | Hitachi Powdered Metals Co Ltd | 焼結複合体の焼結接合方法 |
-
2005
- 2005-09-20 JP JP2005271256A patent/JP4514681B2/ja active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05724U (ja) * | 1991-06-25 | 1993-01-08 | 三菱マテリアル株式会社 | 焼成用治具 |
JPH08134510A (ja) * | 1994-11-04 | 1996-05-28 | Teiboo Kk | 金属またはセラミック粉末射出成形による精密部品 |
JP2004300511A (ja) * | 2003-03-31 | 2004-10-28 | Hitachi Powdered Metals Co Ltd | 焼結複合体の焼結接合方法 |
JP4201330B2 (ja) * | 2003-03-31 | 2008-12-24 | 日立粉末冶金株式会社 | 焼結複合体の焼結接合方法 |
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